A difficult NumberWiz (iPhone game) challenge.

Here's another NumberWiz challenge. This one is difficult. If you can solve it, you must be a number wiz.

How do you add, subtract, multiply and divide 3, 5, 7, 9, 75, 100 to get 969 ?

The above question is typical of NumberWiz, the game of arithmetics for iPhone/iPod touch. It is also adapted for the iPad, where it looks even better. Search for NumberWiz in the App Store. Or even better: search for Proctele in the App Store.